mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
Minor optimization of base64 decode.
Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
This commit is contained in:
parent
2d9e2c6464
commit
686ba5f4ea
@ -26,6 +26,7 @@
|
||||
|
||||
#include "common.h"
|
||||
#include "base64.h"
|
||||
#include "avassert.h"
|
||||
|
||||
/* ---------------- private code */
|
||||
static const uint8_t map2[] =
|
||||
@ -48,10 +49,10 @@ int av_base64_decode(uint8_t *out, const char *in, int out_size)
|
||||
uint8_t *dst = out;
|
||||
|
||||
v = 0;
|
||||
for (i = 0; in[i] && in[i] != '='; i++) {
|
||||
for (i = 0; ; i++) {
|
||||
unsigned int index= in[i]-43;
|
||||
if (index>=FF_ARRAY_ELEMS(map2) || map2[index] == 0xff)
|
||||
return -1;
|
||||
return in[i] && in[i] != '=' ? -1 : dst - out;
|
||||
v = (v << 6) + map2[index];
|
||||
if (i & 3) {
|
||||
if (dst - out < out_size) {
|
||||
@ -60,7 +61,8 @@ int av_base64_decode(uint8_t *out, const char *in, int out_size)
|
||||
}
|
||||
}
|
||||
|
||||
return dst - out;
|
||||
av_assert1(0);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*****************************************************************************
|
||||
|
Loading…
Reference in New Issue
Block a user